材料科学与工程学报2012，Vol.30Issue(3)：343-346,351,5.
固溶处理的热连轧GH4169合金的组织与蠕变特征
Microstructure and Creep Features of Hot Continuous Rolled GH4169 Superalloy after Being Solution Treated
摘要
Abstract
The microstructure and creep features of the solution and aging treated alloy has been investigated.The results show that,after solution and aging treatment,the microstructure of the alloy consists of larger grains with obvious twinning features.Moreover,a great deal of fine γ′ and γ″ phases precipitate in the grains,which can enhance the creep resistance of the alloy.In the ranges of experimental stress and temperature,the creep active energy is about 537.8kJ/mol,and the alloy is sensitive to the applied stress and temperature.During creep,the deformation features of the alloy are dislocation slipping with single or double orientations and twinning deformation.As the creep goes on,the initiation and propagation of the cracks along the grain boundaries lead to intergranular fracture,which is thought to be the fracture mechanism of the alloy.关键词
热连轧GH4169合金/组织结构/蠕变/变形机制/断裂特征Key words
HCR-GH4169 alloy/microstructure/creep/deformation mechanism/fracture features分类
矿业与冶金引用本文复制引用
李振荣,马春蕾,田素贵,陈礼清,刘相华..固溶处理的热连轧GH4169合金的组织与蠕变特征[J].材料科学与工程学报,2012,30(3):343-346,351,5.基金项目
国家自然科学基金重点资助项目 （）
